Pump and wheeled dispenser for viscous fluids

ABSTRACT

AN APPARATUS FOR ROOF CONSTRUCTION AND REPAIR WORK COMPRISES A MANUALLY PROPELLED WHEELED VEHICLE THAT INCLUDES A CONTAINER FOR VISCOUS ADHESIVE MATERIAL AND A SUBMERGED SQUEEGEE TYPE PUMP WHICH HAS A FLEXIBLE VANE TYPE ROTOR THAT IS DRIVEN BY THE WHEELS IN AN ARRANGEMENT WHICH PERMITS THE WHEELS TO BE INDIVIDUALLY ADJUSTED TO ADAPT TO THE SPACING BETWEEN GROOVES IN ROOF DECKING MATERIALS. THE PUMP HAS A PLURALITY OF DISCHARGE PORTS AND A CONDUIT SYSTEM WHICH INCLUDES FLEXIBLE LENGTHS THAT RECEIVE THE ADHESIVE FROM PORTS IS PROVIDED IN THE APPARATUS. THE DISCHARGE ENDS OF THE CONDUITS ARE HELD BY HOLDERS WHICH ARE TRANSVERSELY ADJUSTABLE ON A SUPPORT BRACKET WHICH IN TURN IS ALSO TRANSVERSELY ADJUSTABLE TO THE LINE OF TRAVEL FOR THE VEHICLE. FEATURED IN THE PUMP STRUCTURE IS A MOVABLE CONTROL COMPONENT THAT INCLUDES A VALVE MEMBER AND A VANE DEPRESSING ELEMENT WHICH IS ARRANGED TO PERMIT RELIEF OF THE PRESSURE AT THE DISCHARGE SIDE OF THE PUMP WHEN THE VALVE IS MOVED TO THE CLOSED POSITION.

9, 1971 w. J. WHITLEY, JR

PUMP AND WHEELED DISPENSER FOR VISCOUS FLUIDS Filed 001;. a, v 1968 5Sheets-Sheet-l WILLIAM J. WH/TLEY, JR.

ATTORNEY Peg-9,1971 w. J. WHITLEY, JR 3,562,808

' PUMP AND WHEELED DISPENSER FOR VISCOUS FLUIDS Filed Oct. 1968 5Sheets-Sheet :5

5 FIG. 4

w/u. [AM J. WI-l/TLEY, an.

ATTORNEY INVENTOR 1971; w. J. WHITLEY, JR 3,562,803

PUMP AND WHEELED DISPENSER FOR VISCOUS FLUIDS Filed Oct. 8, 1968 5Sheets-Sheet 4 WILLIAM J. WH/TLEY, JR.

Nigel/mi ATTORNEY INVENTOR United States Patent Ollice 3,562,808Patented Feb. 9, 1971 3,562,808 PUMP AND WHEELED DISPENSER FOR VISCOUSFLUIDS William J. Whitley, Jr.', Sanford, Fla, assignor to Julian P.Benjamin Equipment Company, Jacksonville, Fla., a corporation of FloridaFiled Oct. 8, 1968, Ser. No. 765,775 Int. Cl. A01c /00 U.S. Cl. 222-1773 Claims ABSTRACT OF THE DISCLOSURE An apparatus for roof constructionand repair work comprises a manually propelled wheeled vehicle thatincludes a container for viscous adhesive material and a submergedsqueegee type pump which has a flexible vane type rotor that is drivenby the wheels in an arrangement which permits the Wheels to beindividually adjusted to adapt to the spacing between grooves in roofdecking materials. The pump has a plurality of discharge ports and aconduit system which includes flexible lengths that receive the adhesivefrom ports is provided in the apparatus. The discharge ends of theconduits are held by holders which are transversely adjustable on asupport bracket which in turn is also transversely adjustable to theline of travel for the vehicle. Featured in the pump structure is amovable control component that includes a valve member and a vanedepressing element which is arranged to permit relief of the pressure atthe discharge side of the pump when the valve is moved to the closedposition.

The invention relates to a rotary flexible vane type pump and to anapparatus for use in roof deck construction and repair work fordispensing fluid adhesive materials on the roof deck.

In the construction and repair of roofs for industrial and commercialbuildings, it is common to use corrugated sections in forming the roofdeck. These sections form the principal supports for the rest of theroofing materials which are laid down on top of the deck. 'It is theusual practice to apply an adhesive material along the lands of thecorrugated sections to provide a bond along the lands between the deckand the overlying roofing material. The overlying material in manyinstances may be sheet-type insulation material that spans the distancebetween the spaced lands and thus overlies the grooves therebetween sothat random application of the adhesive is wasteful of adhesive.Consequently any practical dispenser should be adapted to dispense thematerial in accord with a pattern that can be adjusted as need arises.

Those skilled in the art will appreciate the fact that roof decks ofmany commercial buildings cover several acres of ground and consequentlythere is a need for using wheeled dispensers which can carry sizablequantities of fluid adhesive material and can adequately dispense thematerial in the area of the roof deck to which adherence is desired. Oneof the problems that has confronted manufacturers of roofing apparatusis the fact that between manufacturers the specifications for thespacing between the lands and valleys or grooves of the roof decksections varies so that equipment which is suitable for use on a deckmade up of one type of corrugated deck section is inadequate for use ona deck made up from deck sections manufactured by a differentmanufacturer.

In addition to the problems that arise from a lack of standardindustrial specifications for the roof deck sections, there is also theproblem of dispensing adhesive materials which although fluidnevertheless in many cases are so highly viscous as to, for practicalpurposes, preclude the possibility of using gravity flow as a means fordispensing the fluids from the container onto a roof deck in a uniformpattern. Attempts have been made to use positive displacement pumps fordispensing the highly viscous fluids from the adhesive containers and todrive the pumps by a drive connection with the wheels of the dispenser,but such attempts have been generally unsuccessful. In some instancesthe apparatus has failed to uniformly dispense the adhesive material andin other instances the drive connections with the wheels are such as tolimit the use of the device to the roof structure of but onemanufacturer. In yet other instances, the structures utilized are socomplicated as to preclude the possibility of their being economicallymanufactured and in most cases it is almost impossible to effectivelyclean the equipment without the disassembly of many parts.

One object of the invention is to provide a pump of the flexible vanetype which has general utility but which is especially useful forpumping highly viscous fluid materials in an environment where theoccasion arises for the need to close off the discharge of the fluid bya suitable valve and yet permit continued rotation of the rotor.

One particular object of the invention is to provide a pump of theflexible vane type which may be used for dispensing viscous materialsfrom wheeled vehicles and nevertheless be drivingly connected to thewheels of the vehicle.

Yet another object of the invention is to provide an adhesive dispenserfor use in roof repair and construction work and which can be readilyadapted for use in dispensing adhesive material onto corrugated roofdeckings that vary from one job site to the next.

Yet another object of the invention is to provide improvements in awheeled dispenser of the kind contemplated herein and which permit apump rotor to be drivingly connected to the ground contact wheels andalso permit the wheels to be adjusted in their spacing when the needarises to adapt the device for use with diiferently dimensionedcorrugated decking.

Yet another object of the invention is to provide an apparatus fordispensing fluid adhesive materials onto corrugated roof decking andwhich requires a minimum amount of adjustment during use of theapparatus in order to dispense the material in the desired areas of theroof deck.

One aspect of the invention is directed to a flexible vane type pumpwhich is equipped with a vane depressing element that can be moved to anondepressing position with respect to the vanes so as to relieve anyback pressure which would otherwise occur when the outlet of the pump isclosed to the passage of the fluid therethrough.

.Yet another aspect of the invention is directed to a pump of theflexible vane type and wherein a valve member is provided for openingand closing the outlet of the pump, and a vane depressing element isconnected in movement with the valve member and moved to a nondepressingposition with respect to the vanes as the valve member is moved toclosed position.

Yet another aspect of the invention is directed to a dispenser for fluidtype adhesive materials that may be used in roof construction and repairwork and wherein the drive wheels are drivingly connected to the rotorof the pump through separate axles which are axially movable withrespect to the rotor so as to facilitate adjustment of the location ofthe wheel relative to the rotor and without disconnecting the driveconnection between the axle and the rotor.

Yet another aspect of the invention is directed to providing a dispenserfor adhesive materials which may be used in roofing repair andconstruction work and wherein the fluid discharge from the dispenser isdispensed on the roof deck through a plurality of conduits, there beingprovided a plurality of holders for the respective discharge ends of theconduits and which are adjustably mounted on a bracket so that thespacing between the holders, and thus the discharge ends of theconduits, can be varied on the bracket and also a bracket which itselfis mounted in a manner such as to permit adjustment of the brackettransversely to the direction of travel of the vehicle.

The novel features which are believed to be characteristic of thisinvention are set forth with particularity in the appended claims. Theinvention, itself, however, both as to its organization and method ofoperation, together with further objects and advantages thereof, maybest be understood by reference to the following description taken inconnection with the accompanying drawings, in which:

FIG. 1 is a perspective view of a manually propelled push type vehiclefor dispensing highly viscous adhesive material in the construction andrepair of roofs for industrial and commercial types of buildings;

FIG. 2 is a perspective view of a fragment of the vehicle shown in FIG.1 with certain parts being broken away to expose the detail of otherparts and with certain parts in different positions;

FIG. 3 is a left side elevational view of the vehicle shown in FIG. 1with certain parts broken away and others removed;

FIG. 4 is an elevational view taken generally transversely of the lineof travel of the vehicle and along the lines 4-4 of FIG. 3, and withcertain parts being removed and others broken away;

FIG. 5 is a sectional plan view which is generally taken along the lines55 of FIG. 4 with certain parts being broken away and others removed;

FIG. 6 is an enlarged elevational section view of a fragment of thevehicle shown in FIG. 1 and is taken generally along the lines 6-6 ofFIG. 4;

FIG. 7 is a view similar to that shown in FIG. 6 but with certaincomponents in a different position;

FIG. 8 is an enlarged perspective view of one element of a holder forcertain conduits seen in FIG. 1; and

FIG. 9 is an enlarged perspective view of certain elements shown in FIG.2.

Reference is now made to the drawings and wherein a manually propellablevehicle for use in dispensing viscous fluid adhesive materials in theconstruction and repair of roofs for industrial and commercial buildingsis designated at 10. The wheeled dispenser or vehicle 10 includes anopen container 11 which is supported on a wheel assembly 13 that is seenin ground contact with a section 12 of a roof deck in FIGS. 1 and 3. Thevehicle is adapted to be pushed by a worker during use-and in thisrespect it has a handle 14 which is offset from the rear wall 15 of thecontainer and rigidly connected to the container by a pair of inclinedstructural members 16 that are spaced apart and welded to the oppositeside walls 17 and 18 of container 11, as generally shown in thedrawings. The handle 14 is provided with bent ends that serve as handgrips, as seen in FIG. 1, and generally extends transversely to thenormal line 19 of travel when the dispenser is in use.

The top end of the container is reinforced by angles 20 which are weldedto the container walls and which surround the opening 21 into thecontainer well 22. These angles 20 provide a seat for the containercover plate 23. Cover 23 is hinged for pivotal movement between open andclosed positions by a pair of hinges 24 that are located at the frontside of the container. As seen in FIG. 3, the lower section of the frontwall 25 of the container is generally inclined downwardly toward therear of the vehicle. The bottom wall of the container is formed by arectangular plate 26 which, of .course, joins with the 0p posite sidewalls 17 and 18 and with the front and rear walls 25 and 15 to form afluid type arrangement at the bottom 27 of the well 22. Here at thebottom of the container, a pair of forwardly projecting structural side4 members 28 are welded to wall 26. These members 28 are interconnectedat the front of the vehicle by a transverse member 29. Member 29 servesas a ground contacting shoe for supporting the container against pivotalmovement about the axis of the wheel assembly when the vehicle is not inuse.

The container 11 has a rotary pump 30 of the squeegee type and which issupported at the bottom 27 of well 22 on the bottom Wall 26. Pump 30includes a casing 31 which comprises an elongated member 32 which may bean extruded aluminum section, as in the illustrated embodiment, andwhich is arranged transversely to the general line of travel 19 at thebottom of the Well. In addition to member 32 the casing includes a pairof end members 33 that are welded upright at the opposite ends 34 of theextruded member 32. Member 32 has an arcuate section 35 which providesan arcuate surface 36 that is wiped by the flexible vanes of the pumprotor as will be subsequently seen. This surface 36 in part defines therotor chamber 37 in the pump casing 31. To the rear of the arcuatesection 35 in the arrangement illustrated in the embodiment, member 32has an upwardly opening longitudinally extending groove or slot 38 whichprovides a chamber 39 in the casing for the valve member to besubsequently described. This chamber is defined by spaced sections 40and 41 of member 32 and the fluid outlet 42 of the pump is formed in therear wall section 40 by providing a plurality of spaced discharge ports43 in the illustrated embodiment. These ports 43 communicate with thevalve chamber 39 at the interior 44 of the casing 31, and each port hasan aligned opening 45 in the front wall section 41 so that via the valvechamber 39 each port communicates with the rotor chamber 37. The pumpcasing 31 rests on the bottom wall 26, as seen in FIGS. 6 and 7, and therear wall 15 of the container 11 has a plurality of spaced openings 46.These openings 46 are aligned at the exterior of easing section 40 withthe respective ports 43, and each port 43 is internally threaded toreceive an exterionly threaded nipple 47 which projects through the rearwall opening associated with the port. Here the pump casing is securedagainst movement in the well location of the chamber by means of nuts 48which are threaded on the nipples 47 at the exterior of the container asseen in the accompanying drawings.

The pump rotor 49 is, of course, housed in the rotor chamber 37 and thearrangemnt is such that the rotor axis 58' is fixed with respect to thepump casing by the wheel axle arrangement in the wheel assembly. Therotor is drivingly connected to the wheel assembly 13 and one feature ofthe invention resides in a drive arrangement that enables the groundcontact wheels 50 to be laterally adjusted with respect to the oppositesides 51 of the container without disrupting the drive connection. Tofacilitate such adjustment, the rotor includes an elongated open-endedhollow cylindrical core member 52 and which is provided with a key 53that extends between the opposite ends 54 of the member 52 in the hollow55. Each wheel 50 is associated with a separate axle 56 and is fixed tothe axle at its outer end 57 so that the axle is drivingly connected tothe wheel and rotated about its longitudinal axis 58 when the dispenseris in use. Each axle as seen in FIG. 4 is journaled in an adjacentbearing 59 that is bolted to the adjacent side wall by bolts 60 whichengage a seal 61 retaining metal strap 62 at the interior side of theside wall. Appropriate holes are provided in the end wall members of thecasing and also in the adjacent side walls and straps to accommodate thelocations of the axles. Each axle also has a longitudinally extendingkeyway 63 which accommodates the key 53 of core member 52. The inner endof the axle 56 is received in the hollow 55 of the core member in thewheel assembly 13, and of course, is drivingly connected to the rotorand axially slidable with respect to the rotor by virtue of the key typedrive connection. The inner race 65 of each bearing 59 is equipped witha set screw 66 that engages and thus secures the axle againstlongitudinal movement with respect to the rotor, and the set screw ofeach bearing may, of course be manipulated to disengage and release theaxle and thus enable the wheel location to be laterally adjusted withrespect to the adjacent side of the container. The location of eachwheel can be adjusted independently of the other wheel in the assemblyas is indicated by the broken line position 67 for the left wheel shownin FIG. 1. In the preferred embodiment illustrated, both wheels arekeyed to the rotor to avoid a drag on just one wheel. If desired,however, appropriate modifications can be made to key only one axle tothe rotor and in which case the other axle would be freely rotatable inthe hollow of the core.

In addition to the core member 52, the rotor has a plurality of radiallyprojecting flexible vanes that are made from suitable resilient materialsuch as rubber so as to enable accomplishment of the wiping actions thatare characteristic of rotary flexible vane type pumps. The vanes 68 arecircumferentially spaced apart at the perimeter 69 of the rotor and arearranged to wipe the arcuate surface 36 of the casing when the rotor isbeing driven in the direction indicated by arrow 70. Surface 36 definesthe fluid delivery side 71 of the rotor chamber and as the rotorrotates, the fluid admitted to the open casing is trapped in the spaces72 between the vanes 68 as the vanes encounter and thereafter wipe thesurface 36 and advance the fluid along the fluid delivery side 71 of thechamber toward the outlet. As is well known to those familiar withflexible vane type pumps, the pumping action is secured by depressingthe vanes at the discharge side 73 of the rotor chamber by providing asuitable surface which is contacted by the vanes and causes the vanes,as they rotate, to be deflected into the intervening spaces 72. Thisexpresses the fluid in the intervening spaces and creates a pressurehead at the discharge side of the rotor chamber.

One feature of the invention resides in providing a means for regulatingthe discharge or passage of fluid through the outlet of the pump and forsimultaneously relieving the pressure at the discharge side of thechamber when the outlet is closed by actuation of the valve so thatpressure at the discharge side of the chamber does not become a majorfactor in resisting the manual propulsion of the dispensing vehicle whenthe discharge ports are closed.

In this respect a movable control component 74 is provided in the pumpcasing and the component has a vane depressing element 75 that providesa surface 86 which is circumferentially spaced from surface 36 and alsowiped by the rotor vanes when fluid is being pumped and yet anotherelement 76 that forms the valve member 77 of the valve means 78 providedfor regulating the discharge of fluid through the pump outlet 42. Thiscontrol component 74 is vertically movable between extreme positionsthat are designated at 79 and 80 in FIGS. 6 and 7 respectively by themanipulation of a leverage mechanism 81 which is connected to anassembly 82 which includes the control component and which can beremoved from the well of the container tofacilitate the cleaning of theinterior of the container when the need arises. The movable component 74is a generally elongated structure which has opposite ends 83 which arecontiguous to the end members 33 of casing 31. The valve member of thecomponent extends between the end members 33 in the valve chamber 39 andis provided with a plurality of spaced openings 84 which are alignedwith the respective discharge ports 43 and the respective openings 45 insection 41 when the component is in position 79, as seen in FIG. 6. Thevane depressing element 35 also extends between and is contiguous to theopposite end members 33, and when the component is in position 79 theelement 35 is in a vane depressing position, designated at 85. In thisposition the vanes wipe the vane confronting surface 86 of thedepressing element 75, as seen in FIG. 6, and the vanes are deflectedinto the spaces 72 so that the fluid is forced out into the dischargearea and thus maintains a pressure head thereat. When the component 74is in position 79, it will thus be seen that the valve 78 is in an openposition which permits the fluid to discharge and pass out through thedischarge ports 43 and element 75 is in a position which causesdeflection of the vanes into the intervening spaces 72 so that the fluidis forced out into the discharge area 87 within the casing.

The valve member 77 is adapted to slide in the valve chamber and whenthe component is moved to position as seen in FIG. 7, the dischargeports are closed by the member and the vane depressing element assumes anondepressing position 88 with respect to the vanes. With the element 35in this position 88, the fluid trapped between the vanes is merelyrecycled into the inlet area 89 of the casing so that a buildup of backpressure in the discharge area 87 is avoided. As seen in FIG. 7, a smallopening 41a is provided at the bottom of the valve chamber 39 and whichcommunicates with the well to permit fluid to pass in and out of thespace in the chamber 39 beneath the valve member as the valve isactuated.

The leverage mechanism 81 for moving the fluid control component 84includes a pair of hand manipulatable levers 90 that are fixed at theopposite ends of a transversely arranged rod 91 that is journaled forpivotal movement at its opposite ends in the handle supporting sidemembers 16. The container has a transversely extending rod 92 which islocated adjacent the back wall 15 and which is journaled at its oppositeends in the opposite side walls 17 and 18, as seen in FIG. 2. The rod 92has a pair of lugs 93 which are aligned in parallel in the well andlocated adjacent the opposite side walls '17 and 18 respectively.Adjacent the left side of the container, the end of rod 92 is equippedwith a crank 94 which is linked to the adjacent lever 90 by a link 81which is pivotally connected to the lever by a pivot pin 96 that isoffset from the axis of rod 91.

The removable assembly 82 includes a pair of generally upright extendingrods 97 which are fixed at their lower ends by appropriate pins 98 tothe opposite ends 83 of the control component 74. Adjacent the component74, the rods 97 are rigidly interconnected by an elongated structuralmember 99 that serves as a rest for the rear end of a screen component138. The upper ends 100 of rods 97 are bent to project laterally and arereceived in aligned holes 101 in the adjacent lugs 93. This provides apivotal connection between the assembly 82 and the lever mechanism 81.Each rod 97, as seen in FIG. 4, has a U- shaped member 102 which isfixed to the rod adjacent the upper end and whereat it serves as ahandle to aid the worker in bending the rods inwardly to disconnect theassembly from the lug components of the leverage mechanism. In thisrespect, the rods 97 are equipped with inwardly projecting rods 103adjacent the handle and which are received in the open ends of atransverse sleeve component 104 that engages suitable compressionsprings 105 that are carried on the rods 103. The springs serve toyieldably retain the rod ends 100 in the appropriate holes of the lugs93. The assembly is disconnected from the leverage mechanism by drawingthe handles 102 inwardly as to the positions indicated at 106 againstthe urgings of the compression springs 105 so as to withdraw the pivotforming ends from the lug holes 101. Once this has been done the wholeassembly can be withdrawn through the container opening 21.

The levers are pivotally movable between spaced stops 90a and when thelevers 90 are in the positions designated at 107 in FIG. 2, component 74is in the position designated at 80 in FIG. 7. By manipulating thelevers 90 in the direction of arrow 108, rod 92 is caused to pivotallyrotate in the direction of arrow 109 by virtue of the connecting linkand crank arrangement. This movement of rod 92 forces the lugs 93 topivot downwardly to thus carry the control component into the fullyseated position in the valve chamber indicated at 79 in FIG. 6. On theother hand, by drawing the lever 90 from the position shown at 110 inFIG. 1 to the position 107 shown in FIG. 2, the component is drawnupwardly to the position depicted at 80 in FIG. 7. The crank pin 94a ofcrank 94 engages the link 95 in a longitudinally extending slot 94b atthe adjacent end of the link and link 95 carries a sleeve 111 whichcan'slide longitudinally on the link between the crank pin 94a and theend of an adjustable screw element 112 when the latter is adjustablywithdrawn in its link mounting. This permits the crank pin to slide inthe slot 94b and hence the screw element 112 may be manipulated toshorten the effective length of the link for movement of the valvemember into an open position. When the link is thus shortened, the valvemember will fail to fully seat itself in the valve chamber and theopenings 84 will be somewhat out of alignment with the ports.Consequently, the flow of fluid material through the openings 84 will bethrottled when the levers 90 are in their open positions 110.

The fluid discharge from pump 30 is conveyed exteriorly of the containerby a conduit system which is connected with the pump outlet by means ofthe nipples 47. The conduit system 114 comprises a plurality ofindividual conduits 115 and each conduit 115 includes an elongatedflexible tube length 116 or member which is equipped at the dischargeend 117 of the conduit with a discharge nozzle 118. At its opposite end119, the conduit is arranged to receive the fluid discharge from theport associated therewith. In this respect the associated nipple 47 isreceived in the end opening of the tube 116 and the tube is secured onthe nozzle by a suitable retaining member 120.

The various conduits 115 are supported at their discharge ends by abracket and holder arrangement designated at 121. The bracket 122 ispivotally mounted on the rear wall of the container 11 by means of atransverse rod 123 which is secured at its opposite ends to a pair oflugs 124 that are welded to the back wall of the container. The bracket122 includes a tubular structural member 125 through which the rod 123extends and is longitudinally slidable on the rod 123, as well as,pivotally movable with respect to the longitudinal axis of the rod 123.In addition to the tube member 123, the bracket 122 has a pair of arms126 which are spaced apart and fixed at the opposite ends of tube member125. These arms are bent as seen in FIG. 1 and are rigidlyinterconnected at their outer ends by another rod 127 that extendstransversely of the general line of travel of the vehicle. Bracket 122is supported against pivotal movement by a chain length 128 which issuspended from a hook, not shown, mounted on the handle supportingstructural member 16 at the left side of the vehicle and which is alsosecured to the left arm 126 of the bracket. The links may be disengagedfrom the hook member so as to pivotally raise or lower the bracket whenthe need for such pivotal adjustment arises. Bracket 122, as previouslyindicated, is longitudinally slidable on rod 123 so as to enabletransverse adjustment of the position of the bracket with respect to theline of travel of the vehicle. The tube member 125 has a handmanipulatable set screw type element 129 which engages the rod 123 toreleasably secure the bracket against longitudinal movement on thesupport rod 123. By releasing the screw element 129, the bracket can bemoved transversely of the line of travel and thereafter secured againstsuch movement at its adjusted position by manipulating the screw element129 to engage the rod 123.

The various conduits 115 are supported on the bracket at thier dischargeends 117 by means of individual holders that are designated at 130. Eachholder comprises a metal block 131 which has a bore 132 in which thebracket rod 127 is received in the assembled device. The end of theblock is equipped with a set screw type hand manipulatable screw element133 which is threaded in an end bore 134 that communicates with bore 132in the block. Element 133 is hand manipulatable to releasably secure theholder against longitudinal and pivotal movement on the rod 127 and canbe manipulated to facilitate movement of the holder transversely to theline of travel of the vehicle in adjusting the position of the holder onthe bracket. Each block 131 also has another bore 135 in which thenozzle element 118 of the associated conduits 115 is received. Here atthe discharge end of the conduit, the conduit is secured to the holderby means of another set screw element 136 which is threaded in an endbore 137 to releasably engage the nozzle and prevent withdrawal of thenozzle from the holder.

Within the well of the container, a screen component 138 is provided toretain solid foreign objects which through inadvertence may enter thewell area and otherwise interfere with the operation of the pump. Thescreen component includes a rectangular frame 139 which is equipped witha suitable handle 140' and a suitable mesh screen 141 to close theopening 142 of the frame. The rear end of the screen rests on thetransverse member 99 of assembly 82 and is provided with suitablenotches 143 to accommodate the location of the upright rods 97 of theassembly 82. The front end of the screen rests on the front wall of thecontainer as best seen in FIGS.

As depicted in FIGS. 1 and 3, the vehicle is shown as supported on acorrugated roof section designated at 12. By providing an arrangementwhere the ground contact wheels can be adjusted relative to the adjacentsides, the overall spacing between the ground contact wheels can beadjusted so that the wheels can follow the grooves 145 in the corrugatedsection or if desired on the lands 146 of the section. In practice,different manufacturers frequently have different specifications for thespacing between the lands and grooves in the corrugated sectionsmanufactured by them, and by providing an arrangement where the wheelscan be individually moved to adjust the spacing between the wheels it isevident that the dispenser may be readily adapted to the spacing betweenthe grooves and lands of the sections utilized at the job siteregardless of the manufacturers specifications.

The bracket and holder arrangement also has certain advantages at thejob site in that the specifications for laying down adhesive material atmost job sites are such that the adhesive material is laid down on topof the lands 146. Consequently, once the wheels are adjusted toaccommodate the spacing between the grooves and lands, the bracket canbe secured to the transverse rod member 123 by adjusting screw element129. Thereafter the holders 130 may be adjustably spaced apart on rod127 so that the discharge from each nozzle falls on top of the adjacentlands 146 therebelow. The practice of laying down adhesive material inroof construction and repair work is such that the wheel dispenser 10 ispushed across the roof deck in parallel with the lands and at the end ofthe roof deck is turned around for the return trip across the deck.Consequently, once the holders are adjusted to the land spacing, all theworker merely has to do is adjust the bracket on rod 123 to thereafterline up the discharge nozzles with the lands to be covered during eachtraverse of the deck. Thus by providing a bracket which is adjustabletransversely to the line of travel of the wheel dispenser, the need foradjustment of the discharge holders during each pass across the roofdeck is avoided.

While only certain preferred embodiments of this invention have beenshown and described by way of illustration, many modifications willoccur to those skilled in the art and it is, therefore, desired that itbe understood that it is intended herein to cover all such modificationsas fall within the true spirit and scope of this invention.

What is claimed as new and what it is desired to secure by LettersPatent of the United States is:

1. A wheeled vehicle for dispensing fluid adhesive material comprising acontainer for the material having a well and a side wall, a fluid pumpat the bottom of the well which has a rotor chamber, a rotor in thechamber and a plurality of fluid discharge ports, and a plurality ofconduits arranged to receive fluid from the respective discharge ports,each of said conduits having a discharge end and including an elongatedflexible member; said vehicle further comprising a container supportingwheel assembly having a ground contact wheel that is drivingly connectedto the rotor and laterally adjustable and movable with respect to theside wall, a handle secured to the container for use in pushing thevehicle on a line of travel, a bracket supported by the wheel assembly,and a plurality of holders secured to and supporting the respectiveconduits at their discharge ends; said holders being mounted on saidbracket and being individually adjustably movable transversely of theline of travel on the bracket; said pump having valve means including avalve chamber, and a valve member which is slidably movable in the valvechamber between an open position and a closed position; said dischargeports being arranged to communicate with said valve chamher, and saidvalve member having a plurality of openings which communicate with therespective ports and with the rotor chamber when the valve is in saidopen position; and a leverage mechanism connected to the valve memberand including means mounted on the handle and manipulatable to move saidvalve member between said open position and said closed position.

2. A wheeled vehicle for dispensing fluid adhesive material comprising acontainer for the material having a well and a side wall, a fluid pumpat the bottom of the well which has a rotor chamber, a rotor in thechamber and a plurality of fluid discharge ports, and a plurality ofconduits arranged to receive fluid from the respective discharge ports,each of said conduits having a discharge end and including an elongatedflexible member; said vehicle further comprising a container supportingwheel assembly having a ground cont-act wheel that is drivinglyconnected to the rotor and laterally adjustable and movable with respectto the side wall, a handle secured to the container for use in pushingthe vehicle on a line of travel, a bracket supported by the wheelassembly, and a plurality of holders secured to and supporting therespective conduits at their discharge ends; said holders being mountedon said bracket and being individually adjustably movable transverselyof the line of travel on the bracket; said pump having a casing thatincludes a surface defining the fluid delivery side of the chamber, andvalve means that include a valve chamber and a valve member that isslidably movable in the valve chamber between an open position and aclosed position; said rotor including a plurality of radially projectingflexible vanes that are arranged to wipe said surface; said pump furtherhaving a vane depressing element that is fixed to and movable with thevane member between a vane depressing position and a nondepressingposition with respect to the vanes; said discharge ports being arrangedto communicate with said valve chamber, and said valve member havingaplurality of openings which communicate with the respective dischargeports and with the rotor chamber when the vane depressing element is inits vane depressing position and the valve member is in its openposition; and a leverage mechanism connected to the valve member and thevane depressing element and including means for simultaneously movingthe vane depressing element and the valve member.

3. A wheeled vehicle for dispensing fluid adhesive material comprising acontainer having a side wall and a well, and a pump at the bottom of thewell comprising 'a casing that has means defining a rotor chamber and avalve chamber, and means providing a plurality of fluid discharge portswhich communicate with the valve chamber, and a rotor which is mountedfor rotation in the rotor chamber about an 'axis and which has anelongated hollow core member and a plurality of radially projectingflexible vanes which are circumferentially spaced apart at the perimeterof the rotor, and a component which is movable between a first positionand a second position and which has a vane depressing element that isarranged to depress the rotor vanes when the component is at the firstposition, and a valve member that has a plurality of openings whichcommunicate with the respective ports and the rotor chamber when thecomponent is at the first position; a wheel assembly having a groundcontact wheel adjacent said side wall, and an axle which is secured toand movable with the ground contact wheel, which is drivingly engagedwith the core member and which is axially movable in the hollow of saidcore member to enable lateral adjustment of the wheel location withrespect to said side; releasable means securing the axle against suchaxial movement; a conduit system that includes a plurality of conduitsconnected with the respective discharge ports, each of said conduitshaving a flexible member and a discharge end; a handle fixed to thecontainer for use in pushing the vehicle along a line of travel; abracket which is supported on the container and thereon adjustablymovable transversely of the line of travel and which has manipulatab-lemeans releasably securing the bracket against such transverse movement;and a plurality of holders which are mounted on the bracket and thereonindividually adjustably movable transversely of the line of travel, eachof said holders having manipulatable means releasably securing theholders against movement on the bracket and being connected to thedischarge end of a respective one of said conduits.

References Cited UNITED STATES PATENTS 1,091,952 3/1914 North 239-1572,394,781 2/1946 Ieffords 222177 2,819,826 1/1958 Kirschmann 222267X2,852,166 9/1958 Gandrud 222177X 2,906,437 9/1959 Wallis 2221772,933,046 4/1960 McCray 103-117 3,148,642 9/1964 Gould 222178UX ROBERTB. REEVES, Primary Examiner D. A. SCHERBEL, Assistant Examiner U.S. Cl.X.R. 222385, 406

